Version 8.50.12.21

This is the first "official" release 8.50
It includes many enhancement already implemented during the past 2 weeks within the
last 8.40 release.

The major point to keep in mind is:

RemoteApp mode is replacing Seamless mode.
For the first time we do support RemoteApp even on W7 Home or Pro, W8 or W10 basic or PRO